The present invention relates to a teat to be placed in the mouth of an infant, including at least three rigidly connected portions, i.e. a nipple including, at the end thereof, at least one perforation (8) for a liquid to pass therethrough, an areola (4), and an isthmus (3) joining the nipple to the areola (4), a teat in which: the nipple includes an upper portion or palatal portion (6), and a lower portion or lingual portion, which are asymmetric and the isthmus (3) forms the junction between the nipple and the areola (4), said junction being narrowed so as to enable the upper and lower jawbones to be well-placed, said isthmus (3) further including means for ensuring the controlled expulsion of milk from the teat, said means being a valve, a beveled opening, a flap, a diaphragm, or a biconcave lens, preferably a valve consisting of a 3 to 8 mm slot the invention also including a bottle including a teat according to the invention, a container, and a ring for retaining the nipple on the container the invention further including a suckling system including a bottle according to the invention including a container, and a container holder including a strap, wherein said container includes means for attaching the container holder to the container.La présente invention concerne une tétine destinée à être placée dans la bouche d un enfant, comprenant au moins trois parties solidaires qui sont un téton comprenant en son extrémité au moins une perforation (8) destinée au passage d un liquide, une aréole (4), un isthme (3) joignant le téton à laréole (4), tétine dans laquelle: - le téton comprend une partie supérieure ou partie palatine (6) et une partie inférieure ou partie linguale qui sont asymétriques et - listhme (3) fait jonction entre le téton et laréole (4), ladite jonction étant rétrécie pour un bon placement des maxillaires inférieur et supérieur, ledit isthme (3) comprenant en outre des moyens dassurer lexpulsion contrôlée du lait hors de la tétine, lesdits moyens
